# How to check (and set) the tool output voltage from the PolyScope X program? **URL:** \ **Category:** Technical Questions\ **Created:** [January 21, 2026, 4:25pm UTC](https://forum.universal-robots.com/t/how-to-check-and-set-the-tool-output-voltage-from-the-polyscope-x-program/42080 "2026-01-21T16:25:17Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![andrei.kholodnyi](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.universal-robots.com/andrei.kholodnyi/32/6919_2.png) [@andrei.kholodnyi](https://forum.universal-robots.com/u/andrei.kholodnyi)\ **Post date:** [January 21, 2026, 4:25pm UTC](https://forum.universal-robots.com/t/how-to-check-and-set-the-tool-output-voltage-from-the-polyscope-x-program/42080/1 "2026-01-21T16:25:17Z")
Does anyone know how to check (and set) the tool output voltage from the PolyScope X program? My Hand-E Robotiq gripper does not work if the voltage is not set to 24 V. ![image](https://us1.discourse-cdn.com/flex020/uploads/universal_robots/original/2X/3/34b5b3036b77cfac9a7e6993eeefbbc6f9a1a0bc.png) ---
**Author:** ![mafa](https://avatars.discourse-cdn.com/v4/letter/m/bc79bd/32.png) [@mafa](https://forum.universal-robots.com/u/mafa)\ **Post date:** [January 21, 2026, 4:43pm UTC](https://forum.universal-robots.com/t/how-to-check-and-set-the-tool-output-voltage-from-the-polyscope-x-program/42080/2 "2026-01-21T16:43:16Z")
I’ve just used set\_tool\_voltage(24) on polyscope 3.14, i would assume there is a script just like, or similar to this. it should be in the script directory if so. for checking im not sure if there is a script for it. 🙂 ---
**Author:** ![dbarton](https://avatars.discourse-cdn.com/v4/letter/d/eb8c5e/32.png) [@dbarton](https://forum.universal-robots.com/u/dbarton)\ **Post date:** [January 21, 2026, 8:56pm UTC](https://forum.universal-robots.com/t/how-to-check-and-set-the-tool-output-voltage-from-the-polyscope-x-program/42080/3 "2026-01-21T20:56:55Z")
it’s already at 24V. to change it, just press in the box that says 24V. Did you activate the gripper in the urcap? ---
**Author:** ![andrei.kholodnyi](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.universal-robots.com/andrei.kholodnyi/32/6919_2.png) [@andrei.kholodnyi](https://forum.universal-robots.com/u/andrei.kholodnyi)\ **Post date:** [January 21, 2026, 9:55pm UTC](https://forum.universal-robots.com/t/how-to-check-and-set-the-tool-output-voltage-from-the-polyscope-x-program/42080/4 "2026-01-21T21:55:19Z")
thanks, I have found it. I’ll check it tomorrow ---
**Author:** ![andrei.kholodnyi](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.universal-robots.com/andrei.kholodnyi/32/6919_2.png) [@andrei.kholodnyi](https://forum.universal-robots.com/u/andrei.kholodnyi)\ **Post date:** [January 21, 2026, 9:58pm UTC](https://forum.universal-robots.com/t/how-to-check-and-set-the-tool-output-voltage-from-the-polyscope-x-program/42080/5 "2026-01-21T21:58:34Z")
I am using PolyScope X 10.11.0 and Robotiq URCapsX 3.28.0.122467. When you create a new program, the tool voltage is always set to **0**. You need to go to **Communication → Tool I/O** and set it to **24 V**. ---
**Author:** ![mafa](https://avatars.discourse-cdn.com/v4/letter/m/bc79bd/32.png) [@mafa](https://forum.universal-robots.com/u/mafa)\ **Post date:** [January 22, 2026, 6:22am UTC](https://forum.universal-robots.com/t/how-to-check-and-set-the-tool-output-voltage-from-the-polyscope-x-program/42080/6 "2026-01-22T06:22:07Z")
alternatively, would it save with the installation if you set the 24V and then saved? i have not worked with poly X yet ---
**Author:** ![andrei.kholodnyi](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.universal-robots.com/andrei.kholodnyi/32/6919_2.png) [@andrei.kholodnyi](https://forum.universal-robots.com/u/andrei.kholodnyi)\ **Post date:** [January 22, 2026, 11:24am UTC](https://forum.universal-robots.com/t/how-to-check-and-set-the-tool-output-voltage-from-the-polyscope-x-program/42080/7 "2026-01-22T11:24:56Z")
I am unable to set the tool voltage to 24 V using **set\_tool\_voltage(24)** I have written a simple program: - set\_tool\_communication - set\_tool\_voltage - open/close gripper ![image](https://us1.discourse-cdn.com/flex020/uploads/universal_robots/original/2X/2/2f7fec305f157b4e133b64b65d6ef467d1a46e4b.png) It works fine when the tool voltage is set to 24 V. However, if the voltage is set to **0 V** , it does not fail when **set\_tool\_voltage(24)** is executed. I can see in the control box logs that the command is executed, but the value in the GUI remains at **0 V** ![image](https://us1.discourse-cdn.com/flex020/uploads/universal_robots/original/2X/7/70e7ae50db353c23d036f1b8d31030f68dbac22a.png) and the gripper does not work. ![image](https://us1.discourse-cdn.com/flex020/uploads/universal_robots/original/2X/1/1f0b28823d9c03fb3b1deadea4fffd4831171d96.png) I don’t think there is an **Installation tab** in the PolyScope X. ---
**Author:** ![efn](https://avatars.discourse-cdn.com/v4/letter/e/35a633/32.png) [@efn](https://forum.universal-robots.com/u/efn)\ **Post date:** [January 22, 2026, 12:24pm UTC](https://forum.universal-robots.com/t/how-to-check-and-set-the-tool-output-voltage-from-the-polyscope-x-program/42080/8 "2026-01-22T12:24:47Z")
Have you considered contacting Robotiq about this? They must have a solution if their URCap is not properly controlling the tool voltage. ---
**Author:** ![dbarton](https://avatars.discourse-cdn.com/v4/letter/d/eb8c5e/32.png) [@dbarton](https://forum.universal-robots.com/u/dbarton)\ **Post date:** [January 22, 2026, 1:13pm UTC](https://forum.universal-robots.com/t/how-to-check-and-set-the-tool-output-voltage-from-the-polyscope-x-program/42080/9 "2026-01-22T13:13:42Z")
I am on X 10.11.1 and URcap 3.33.0 and I do not have this issue. I just tested it. When you first power on the controller and arm, what does it say the status of the gripper is in the urcap section of the application tab? reading this may also be helpful. it looks like you need to manual scan on startup. [https://blog.robotiq.com/hubfs/support-files/Robotiq%20Adaptive%20Grippers%20on%20Polyscope%20X%20-%20User%20Guide\_3.28.0\_2025-05-13.pdf](https://blog.robotiq.com/hubfs/support-files/Robotiq%20Adaptive%20Grippers%20on%20Polyscope%20X%20-%20User%20Guide_3.28.0_2025-05-13.pdf) ---
**Author:** ![dbarton](https://avatars.discourse-cdn.com/v4/letter/d/eb8c5e/32.png) [@dbarton](https://forum.universal-robots.com/u/dbarton)\ **Post date:** [January 22, 2026, 1:15pm UTC](https://forum.universal-robots.com/t/how-to-check-and-set-the-tool-output-voltage-from-the-polyscope-x-program/42080/10 "2026-01-22T13:15:59Z")
it’s called the application tab in Polyscope X and there is no save option ---
**Author:** ![andrei.kholodnyi](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.universal-robots.com/andrei.kholodnyi/32/6919_2.png) [@andrei.kholodnyi](https://forum.universal-robots.com/u/andrei.kholodnyi)\ **Post date:** [January 22, 2026, 4:18pm UTC](https://forum.universal-robots.com/t/how-to-check-and-set-the-tool-output-voltage-from-the-polyscope-x-program/42080/11 "2026-01-22T16:18:54Z")
@efn Yes, I have contacted Robotiq support. It was their suggestion to explicitly set the tool voltage to 24 V